SN65ALS176, SN75ALS176, SN75ALS176A, SN75ALS176B

DIFFERENTIAL BUS TRANSCEIVERS

SLLS040H – AUGUST 1987 – REVISED JUNE 2000

11

POST OFFICE BOX 655303

PARAMETER MEASUREMENT INFORMATION

TEST CIRCUIT

VOLTAGE WAVEFORMS

2 k

Ω

5 V

S3

1N916 or Equivalent

5 k

Ω

50

Ω

S1

1.5 V

– 1.5 V

tPZL

1.5 V

1.5 V

3 V

0 V

VOL

tPZH

1.5 V

1.5 V

S1 to 1.5 V

S2 Open

S3 Closed

Input

0 V

3 V

Output

0 V

VOH

VOL

0.5 V

1.5 V

0 V

3 V

tPLZ

VOH

tPHZ

3 V

0 V

0.5 V

Input

Output

≈1.3 V

Input

Output

Input

Output

≈4.5 V

≈1.3 V

CL = 15 pF

(see Note A)

Generator

(see Note B)

1.5 V

NOTES: A. CL includes probe and jig capacitance.

B. The input pulse is supplied by a generator having the following characteristics: PRR

≤ 1 MHz, 50% duty cycle, tr ≤ 6 ns, tf ≤ 6 ns,

ZO =50 Ω.

Output

S2

S1 to 1.5 V

S2 Closed

S3 Closed

S1 to –1.5 V

S2 Closed

S3 Open

S1 to –1.5 V

S2 Closed

S3 Closed

Figure 8. Receiver Test Circuit and Voltage Waveforms